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Count how many records are in a CSV Python?
...ds of code to get the number of lines in a csv file in terms of speed. The best method is below.
with open(filename) as f:
sum(1 for line in f)
Here is the code tested.
import timeit
import csv
import pandas as pd
filename = './sample_submission.csv'
def talktime(filename, funcname, func):
...
What is the C# equivalent of NaN or IsNumeric?
...hrowing exceptions if possible.
I opted for an extension method taking the best of 2 answers here.
/// <summary>
/// Extension method that works out if a string is numeric or not
/// </summary>
/// <param name="str">string that may be a number</param>
///...
Copy / Put text on the clipboard with FireFox, Safari and Chrome
...the Mozilla Firefox knowledge base.
The solution offered by amdfan is the best if you are having a lot of users and configuring their browser isn't an option. Though you could test if the clipboard is available and provide a link for changing the settings, if the users are tech savvy. The JavaScrip...
Replace all non Alpha Numeric characters, New Lines, and multiple White Space with one Space
...CatSan for pointing that out! Upped it, and Saruman, you're free to change best answer to whatever :-) But it should be \W+, not [W+] Well, happy new year all!
– Jonny 5
Jan 1 '14 at 2:30
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“Parse Error : There is a problem parsing the package” while installing Android application
...
Best answer here. For me it was changing the name of the package after it was signed. Thanks a lot.
– Jannie Theunissen
Aug 15 '13 at 7:18
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Change templates in Xcode
...e/Templates/File Templates/Source and put your custom templates there. The best way may be to use as base one of the ones in /Applications/Xcode.app/Contents/Developer/Library/Xcode/Templates/File Templates/Source
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How do I call a JavaScript function on page load?
... Note that this will not work in IE 8 and lower. Otherwise this is the best pure JS solution!
– Philipp
May 20 '15 at 10:57
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In Java, how do I check if a string contains a substring (ignoring case)? [duplicate]
...tack;
needle = needle == null ? "" : needle;
// Works, but is not the best.
//return haystack.toLowerCase().indexOf( needle.toLowerCase() ) > -1
return haystack.toLowerCase().contains( needle.toLowerCase() )
}
Then call it using:
if( contains( str1, str2 ) ) {
System.out.println( "...
How to make a new List in Java
...;(List.of(3, 4));
var list3 = new ArrayList<String>();
And follow best practices...
Don't use raw types
Since Java 5, generics have been a part of the language - you should use them:
List<String> list = new ArrayList<>(); // Good, List of String
List list = new ArrayList(); ...
How to change the name of an iOS app?
...eady have. Changing the 'bundle display name' in the project plist is the best way to do it.
– MiMo
Jan 8 '15 at 15:52
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